Context of Lesson:
In this class we will look at the aspects we’ve talked about it class; molecular geometry, polarity, intermolecular forces, bond dissociation energy, and resonance. We will be connection all of these concepts to the effects on the chemical properties of a molecule; mainly boiling point.
Opportunities to Learn: Depth of Knowledge:
Level 3
Assess the effects of bonding and molecular geometry on a molecules chemical properties.
Prerequisite Knowledge:
Bonding
Periodic Table
Intermolecular forces
Molecular Geometry
Plans for Differentiating Instruction:
During this class the students will finish their KWL which will help the students to see how much they have learned throughout the few weeks of this unit. This will help the students to make connections between the topics. I will also be using illustrations so that the students can visually see why the shapes and types of forces effect chemical properties.
Accommodations and modifications:
This is difficult and will be assessed on the final unit exam. For the students that need some additional help I will decrease the number of molecules that they would need to differentiate the greater melting/boiling point.
Environmental factors:
The students will be sitting in their normal groups.
Materials:
KWL’s
Illustrations of the types of bonds
Powerpoint
Objectives:
The students will assess the effects of bonding and molecular geometry on a molecules chemical properties.
Instruction: Opening:
Collect bond strength labs.
Finish KWL.
Engagement:
Finish powerpoint.
We learned about many aspects of molecules in the last few weeks.
Bonding and molecular geometry seem to have been the main focus along with intermolecular forces.
How do these effect chemical properties?
First lets look at bonding and the forces.
Intermolecular forces effect melting and boiling points.
Polarity.
Creates areas of positive and negative charge.
Conducts a current.
Illustrate how the polar molecules would line up.
Dipole Dipole.
Illustrate how the molecules interact.
Creates extra weak bonds
Elevates boiling/melting point slightly.
Hydrogen bonding.
Create many bonds.
More bonds to break.
Higher boiling/melting point.
Molecular geometry.
Different shapes of molecules can make it more difficult to react because of steric hinderance.
The shapes and sizes of molecules can also effect the melting/boiling points.
More bonds to break the higher the boiling point.
Closure:
Recap the class.
We finished the power point on resonance and bond strength.
We saw how certain types of bonds and geometries effect the properties of molecules.
The next class is a review for the exam.
Come prepared with questions.
Assessment:
The students will be assessed on the final unit exam.
Lesson Plan
Lesson Title: Effects of Forces on Chemical Properties
State Standards: (GLEs/GSEs)
GSE - PS1 (9-11) - 4
National Standards:
Context of Lesson:
In this class we will look at the aspects we’ve talked about it class; molecular geometry, polarity, intermolecular forces, bond dissociation energy, and resonance. We will be connection all of these concepts to the effects on the chemical properties of a molecule; mainly boiling point.
Opportunities to Learn:
Depth of Knowledge:
Prerequisite Knowledge:
Plans for Differentiating Instruction:
During this class the students will finish their KWL which will help the students to see how much they have learned throughout the few weeks of this unit. This will help the students to make connections between the topics. I will also be using illustrations so that the students can visually see why the shapes and types of forces effect chemical properties.
Accommodations and modifications:
This is difficult and will be assessed on the final unit exam. For the students that need some additional help I will decrease the number of molecules that they would need to differentiate the greater melting/boiling point.
Environmental factors:
The students will be sitting in their normal groups.
Materials:
Objectives:
Instruction:
Opening:
Engagement:
Closure:
Assessment:
The students will be assessed on the final unit exam.
Reflections:
(only done after lesson is enacted)
Student Work Sample 1 – Approaching Proficiency:
Student Work Sample 2 – Proficient:
Student Work Sample 3 – Exceeds Proficiency: